The following information is available for Water Inc. Date Units Unit Cost January 1, 2020 (beginning inventory) 100 $50.00 Purchases: January 10, 2020 75 52.00 January 15, 2020 150 52.50 January 30, 2020 100 55.00 The company maintains a periodic inventory system. A physical count shows 125 units in stock on January 31. What is (a) ending inventory on January 31, and (b) cost of goods sold for January, using the FIFO inventory method